Two years ago I built a 6-course 12-string classical (now sold) and am starting to build a couple more. This is a nylon-string guitar, not a Gran.
I enjoy playing the 12-string as much as the 6-string, and find it particularly well suited to some baroque pieces I play - but also to some other types of music. It's a challenge to play well, because the fingerboard is no wider than on a 6-sting, so you can easily foul (i.e. sound or mute) adjacent strings and create unwanted noise. But the radiance of 6 courses tuned in unison makes it all very worthwhile. A complete description covering the concept, the sound, construction, playing considerations, etc. is on my web site at this link: http://6course.blogspot.ca/p/6-course-1 ... uitar.html
The back and sides are African Satinwood, and the soundboard is Sitka. As the photo shows, I used an unconventional, but simple method for handling the additional tuners, allowing standard tuners to be used, and allowing the guitar to fit in a standard guitar case. For more info on how the dual tuner pairs work, see my web site.
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